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packet: Use flist to save calls to malloc()/free()

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a separate free-list is used to recycle memory of fixed-sized packets
with up to MAX_APPENDED_SIZE of data

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
This commit is contained in:
Peter Meerwald 2014-10-23 14:19:44 +02:00 • committed by Peter Meerwald
parent f92300cc92
commit 6a55df78aa
1 changed files with 9 additions and 3 deletions
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12
src/pulsecore/packet.c
View file

@ -26,6 +26,7 @@
#include <pulse/xmalloc.h>
#include <pulsecore/macro.h>
#include <pulsecore/refcnt.h>
#include <pulsecore/flist.h>
#include "packet.h"
@ -41,12 +42,15 @@ typedef struct pa_packet {
} per_type;
} pa_packet;
PA_STATIC_FLIST_DECLARE(packets, 0, pa_xfree);
pa_packet* pa_packet_new(size_t length) {
pa_packet *p;
pa_assert(length > 0);
p = pa_xnew(pa_packet, 1);
if (!(p = pa_flist_pop(PA_STATIC_FLIST_GET(packets))))
p = pa_xnew(pa_packet, 1);
PA_REFCNT_INIT(p);
p->length = length;
if (length > MAX_APPENDED_SIZE) {
@ -77,7 +81,8 @@ pa_packet* pa_packet_new_dynamic(void* data, size_t length) {
pa_assert(data);
pa_assert(length > 0);
p = pa_xnew(pa_packet, 1);
if (!(p = pa_flist_pop(PA_STATIC_FLIST_GET(packets))))
p = pa_xnew(pa_packet, 1);
PA_REFCNT_INIT(p);
p->length = length;
p->data = data;
@ -111,6 +116,7 @@ void pa_packet_unref(pa_packet *p) {
if (PA_REFCNT_DEC(p) <= 0) {
if (p->type == PA_PACKET_DYNAMIC)
pa_xfree(p->data);
pa_xfree(p);
if (pa_flist_push(PA_STATIC_FLIST_GET(packets), p) < 0)
pa_xfree(p);
}
}